Oreburrow Tunnel

8 Pokémon can be caught at Oreburrow Tunnel in Hisui.

Oreburrow Tunnel passes through the mountain at Obsidian Falls in the eastern Obsidian Fieldlands of Hisui, linking The Heartwood with Grueling Grove. The passage is long and twisting, widening at its midpoint into a sizable cavity where ore deposits can be found. In the Sinnoh era, this tunnel is absorbed into the Oreburgh Mine.